US813084A - Setting. - Google Patents

Description

bro-.$813,084. 'PATBNTBD EEB. 20, 1906.

I G. W. DOVER.

-V SETTING. l

APPLICATION FILED AUG. 25, 1905.

I 5&4. WITNESSES ATTORNEY,

UNITED STATES PATENT FFIB.

GEORGE w. DOVER, OR cRANsTON, RHODE rsLAND.

SETTING..

Specification of Letters Patent.

Patented Feb. 20, 1 906.

To all whom, it party concern:

Be it known that I, GEORGE W. DOVER, a citizen of the United States, residing at Cranston, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Settings, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to gem-settings, and has for its object a structure which admits the use of base metal in its composition without exposure and cheapens the manufacture of the setting.

Plated settings have usually been made by cutting out from a strip of plated stock a planchet with radial prongs and the whole cupped up into final form, whereby the base metal was exposed between the prongs or in the opening in the setting-base.`

My invention consists in the introduction into a simple or compound precious-metal shell a base-metal core or bushing.

The drawings herewith disclose my invene tion, as follows:

Figure l is a plan view of a complete setting in which is mounted a gem; Fig. 2, a transverse section of the same on line a: a: of Fig. 1 Figs. 3 and 4, a plan and a transverse central section, respectively, of the bushing; Figs. 5 and 6 like views, respectively, of the shell; and Fig. 7 a perspective view of a modified form of my setting.

Like reference-letters indicate like parts throughout the drawings.

My novel setting comprises the following features: AshellAis struck up provided atits lower end with an annular internal flange a, having its margin a upwardly inclined. The shell is of precious metal, either simple or compound-that is, the shell may be of pure gold or silver or of platers metal a2 overlaid or plated with gold or silver a3. Into the shell thus constructed is forced at a driving fit a bushing B. The bushing is of greater thickness than the thickness of the materials in the shell A and has its upper end t beveled or inclined. When the parts are assembled, the lower end of the bushing rests upon the annular flange a and is inclosed by the fiange margin a. The upper end of the bushing, however, does not extend to the end of the inclosing shell A. The gem C is supported upon the inclined upper extremity t of the bushing B and is set in position by over-v turning the upper margin a4 ofl the shell A (shown in broken outline in Fig. 2) down upon and over the margin of the gem-I thereby forming a a retaining-iiange a4 of intact precious metal.

While my invention'is described as embodied in a circular form, it is obviously applicable to elliptical and angular forms. Fig. 7 shows an angular structure where the shell A has rectilinear sides and the bushing B is of corresponding form.

What I claim is- A gem-setting comprising a bushing the upper edge of which is declined inwardly throughout the thickness thereof, and a shell surrounding and extending above the bushing and having an inturned flange at its lower end disposed immediately below the lower edge of the bushing and also having a margin a extending upwardly from the inner edge of the said flange and arranged against the inner side of the lower portion of the bushing.

In testimony whereof I have ailixed my signature in presence of two witnesses.

GEORGE W. DOVER.

Witnesses:

HORATIO E. BELLows, WILLIAM E. BROWN.

sOJ

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